<?php

/**
 * Class and Function List:
 * Function list:
 * - __construct()
 * - render()
 * - enqueue()
 * - makeGoogleWebfontLink()
 * - makeGoogleWebfontString()
 * - output()
 * - getGoogleArray()
 * - getSubsets()
 * - getVariants()
 * Classes list:
 * - ReduxFramework_typography
 */

if (!class_exists('ReduxFramework_typography')) {
    class ReduxFramework_typography {

        private $std_fonts = array(
            "Arial, Helvetica, sans-serif"                          => "Arial, Helvetica, sans-serif",
            "'Arial Black', Gadget, sans-serif"                     => "'Arial Black', Gadget, sans-serif",
            "'Bookman Old Style', serif"                            => "'Bookman Old Style', serif",
            "'Comic Sans MS', cursive"                              => "'Comic Sans MS', cursive",
            "Courier, monospace"                                    => "Courier, monospace",
            "Garamond, serif"                                       => "Garamond, serif",
            "Georgia, serif"                                        => "Georgia, serif",
            "Impact, Charcoal, sans-serif"                          => "Impact, Charcoal, sans-serif",
            "'Lucida Console', Monaco, monospace"                   => "'Lucida Console', Monaco, monospace",
            "'Lucida Sans Unicode', 'Lucida Grande', sans-serif"    => "'Lucida Sans Unicode', 'Lucida Grande', sans-serif",
            "'MS Sans Serif', Geneva, sans-serif"                   => "'MS Sans Serif', Geneva, sans-serif",
            "'MS Serif', 'New York', sans-serif"                    => "'MS Serif', 'New York', sans-serif",
            "'Palatino Linotype', 'Book Antiqua', Palatino, serif"  => "'Palatino Linotype', 'Book Antiqua', Palatino, serif",
            "Tahoma,Geneva, sans-serif"                             => "Tahoma, Geneva, sans-serif",
            "'Times New Roman', Times,serif"                        => "'Times New Roman', Times, serif",
            "'Trebuchet MS', Helvetica, sans-serif"                 => "'Trebuchet MS', Helvetica, sans-serif",
            "Verdana, Geneva, sans-serif"                           => "Verdana, Geneva, sans-serif",
        );

        private $user_fonts = true;
        
        /**
         * Field Constructor.
         *
         * Required - must call the parent constructor, then assign field and value to vars, and obviously call the render field function
         *
         * @since ReduxFramework 1.0.0
         */
        function __construct($field = array(), $value = '', $parent) {
            global $wp_filesystem;

            $this->parent   = $parent;
            $this->field    = $field;
            $this->value    = $value;

            // Init wp_filesystem
            Redux_Functions::initWpFilesystem();
            //Move installed googlefonts.json BACK!
            // Set upload dir path for google fonts
            $this->font_dir =  ReduxFramework::$_dir . 'inc/fields/typography/';

            // Check for redux_google_font dir
            if (!is_dir($this->font_dir)) {

                // Create it, if not found
                $wp_filesystem->mkdir($this->font_dir, FS_CHMOD_DIR);
            }

            // Set google font file variables
            $this->google_json = $this->font_dir . 'googlefonts.json';

            // Move installed googlefonts.json to upload location, if not exists
            if (!file_exists($this->google_json)) {
                $wp_filesystem->copy(ReduxFramework::$_dir . 'inc/fields/typography/googlefonts.json', $this->font_dir . 'googlefonts.json', false);
            }

            // Set field array defaults.  No errors please
            $defaults = array(
                'font-family'       => true,
                'font-size'         => true, 
                'font-weight'       => true,
                'font-style'        => true,
                'font-backup'       => false,
                'subsets'           => true,
                'custom_fonts'      => true,
                'text-align'        => true,
                'text-transform'    => false,
                'font-variant'      => false,
                'text-decoration'   => false,
                'color'             => true,
                'preview'           => true,
                'line-height'       => true, 
                'word-spacing'      => false,
                'letter-spacing'    => false,
                'google'            => true,
                'update_weekly'     => false    // Enable to force updates of Google Fonts to be weekly
            );
            $this->field = wp_parse_args($this->field, $defaults);

            // Set value defaults.
            $defaults = array(
                'font-family'       => '',
                'font-options'      => '',
                'font-backup'       => '',
                'text-align'        => '',
                'text-transform'    => '',
                'font-variant'      => '',
                'text-decoration'   => '',
                'line-height'       => '',
                'word-spacing'      => '',
                'letter-spacing'    => '',
                'subsets'           => '',
                'google'            => false,
                'font-script'       => '',
                'font-weight'       => '',
                'font-style'        => '',
                'color'             => '',
                'font-size'         => '',
            );
            $this->value = wp_parse_args($this->value, $defaults);
            
            
            // Get the google array
            $this->getGoogleArray();

            if (empty($this->field['fonts'])) {
                $this->user_fonts = false;
                $this->field['fonts'] = $this->std_fonts;
            }

            // Localize std fonts
            $this->localizeStdFonts();
            
        }

        function localize($field, $value = "") {
            $params = array();

            if (true == $this->user_fonts) {
                $params['std_font'] = $this->field['fonts'];
            }

            return $params;
        }    


        /**
         * Field Render Function.
         *
         * Takes the vars and outputs the HTML for the field in the settings
         *
         * @since ReduxFramework 1.0.0
         */
        function render() {
            global $wp_filesystem;

            // Since fonts declared is CSS (@font-face) are not rendered in the preview,
            // they can be declared in a CSS file and passed here so they DO display in
            // font preview.  Do NOT pass style.css in your theme, as that will mess up
            // admin page styling.  It's recommended to pass a CSS file with ONLY font
            // declarations.
            // If field is set and not blank, then enqueue field
            if (isset($this->field['ext-font-css']) && $this->field['ext-font-css'] != '') {
                wp_register_style('redux-external-fonts', $this->field['ext-font-css']);
                wp_enqueue_style('redux-external-fonts');
            }

            if (empty($this->field['units']) && !empty($this->field['default']['units'])) {
                $this->field['units'] = $this->field['default']['units'];
            }

            if (empty($this->field['units']) || !in_array($this->field['units'], array(
                        'px',
                        'em',
                        'rem',
                        '%'
                    ))) {
                $this->field['units'] = 'px';
            }

            $unit = $this->field['units'];

            echo '<div id="' . $this->field['id'] . '" class="redux-typography-container" data-id="' . $this->field['id'] . '" data-units="' . $unit . '">';

            if (isset($this->field['select2'])) { // if there are any let's pass them to js
                $select2_params = json_encode($this->field['select2']);
                $select2_params = htmlspecialchars($select2_params, ENT_QUOTES);

                echo '<input type="hidden" class="select2_params" value="' . $select2_params . '">';
            }

            /* Font Family */
            if ($this->field['font-family'] === true) {
                if (filter_var($this->value['google'], FILTER_VALIDATE_BOOLEAN)) {
                    $fontFamily = explode(', ', $this->value['font-family'], 2);
                    if (empty($fontFamily[0]) && !empty($fontFamily[1])) {
                        $fontFamily[0] = $fontFamily[1];
                        $fontFamily[1] = "";
                    }
                }

                if (!isset($fontFamily)) {
                    $fontFamily = array();
                    $fontFamily[0] = $this->value['font-family'];
                    $fontFamily[1] = "";
                }
                
                $userFonts = '0';
                if (true == $this->user_fonts) {
                    $userFonts = '1';
                }
                
                $isGoogleFont = '0';
                if (isset($this->parent->fonts['google'][$fontFamily[0]])) {
                    $isGoogleFont = '1';
                }
                
                echo '<input type="hidden" class="redux-typography-font-family ' . $this->field['class'] . '" data-user-fonts="' . $userFonts . '" name="' . $this->field['name'] . '[font-family]' . $this->field['name_suffix'] . '" value="' . $this->value['font-family'] . '" data-id="' . $this->field['id'] . '"  />';
                echo '<input type="hidden" class="redux-typography-font-options ' . $this->field['class'] . '" name="' . $this->field['name'] . '[font-options]' . $this->field['name_suffix'] . '" value="' . $this->value['font-options'] . '" data-id="' . $this->field['id'] . '"  />';

                echo '<input type="hidden" class="redux-typography-google-font" value="' . $isGoogleFont . '" id="' . $this->field['id'] . '-google-font">';
                
                echo '<div class="select_wrapper typography-family" style="width: 220px; margin-right: 5px;">';
                echo '<label>' . __('Font Family', 'redux-framework') . '</label>';
                $placeholder = $fontFamily[0] ? $fontFamily[0] : __('Font family', 'redux-framework');

                echo '<div class=" redux-typography redux-typography-family select2-container ' . $this->field['class'] . '" id="' . $this->field['id'] . '-family" placeholder="' . $placeholder . '" data-id="' . $this->field['id'] . '" data-value="' . $fontFamily[0] . '">';

                echo '</div>';
                echo '</div>';

                $googleSet = false;
                if ($this->field['google'] === true) {
                    // Set a flag so we know to set a header style or not
                    echo '<input type="hidden" class="redux-typography-google' . $this->field['class'] . '" id="' . $this->field['id'] . '-google" name="' . $this->field['name'] . '[google]' . $this->field['name_suffix'] . '" type="text" value="' . $this->field['google'] . '" data-id="' . $this->field['id'] . '" />';
                    $googleSet = true;
                }
            }

            /* Backup Font */
            if ($this->field['font-family'] === true && $this->field['google'] === true) {

                if (false == $googleSet) {
                    // Set a flag so we know to set a header style or not
                    echo '<input type="hidden" class="redux-typography-google' . $this->field['class'] . '" id="' . $this->field['id'] . '-google" name="' . $this->field['name'] . '[google]' . $this->field['name_suffix'] . '" type="text" value="' . $this->field['google'] . '" data-id="' . $this->field['id'] . '"  />';
                }
                
                if ($this->field['font-backup'] === true) {
                    echo '<div class="select_wrapper typography-family-backup" style="width: 220px; margin-right: 5px;">';
                    echo '<label>' . __('Backup Font Family', 'redux-framework') . '</label>';
                    echo '<select data-placeholder="' . __('Backup Font Family', 'redux-framework') . '" name="' . $this->field['name'] . '[font-backup]' . $this->field['name_suffix'] . '" class="redux-typography redux-typography-family-backup ' . $this->field['class'] . '" id="' . $this->field['id'] . '-family-backup" data-id="' . $this->field['id'] . '" data-value="' . $this->value['font-backup'] . '">';
                    echo '<option data-google="false" data-details="" value=""></option>';

                    foreach ($this->field['fonts'] as $i => $family) {
                        echo '<option data-google="true" value="' . $i . '"' . selected($this->value['font-backup'], $i, false) . '>' . $family . '</option>';
                    }

                    echo '</select></div>';
                }
            }

            /* Font Style/Weight */
            if ($this->field['font-style'] === true || $this->field['font-weight'] === true){
                
                echo '<div class="select_wrapper typography-style" original-title="' . __('Font style', 'redux-framework') . '">';
                echo '<label>' . __('Font Weight &amp; Style', 'redux-framework') . '</label>';

                $style = $this->value['font-weight'] . $this->value['font-style'];

                echo '<input type="hidden" class="typography-font-weight" name="' . $this->field['name'] . '[font-weight]' . $this->field['name_suffix'] . '" value="' . $this->value['font-weight'] . '" data-id="' . $this->field['id'] . '"  /> ';
                echo '<input type="hidden" class="typography-font-style" name="' . $this->field['name'] . '[font-style]' . $this->field['name_suffix'] . '" value="' . $this->value['font-style'] . '" data-id="' . $this->field['id'] . '"  /> ';
                echo '<select data-placeholder="' . __('Style', 'redux-framework') . '" class="redux-typography redux-typography-style select' . $this->field['class'] . '" original-title="' . __('Font style', 'redux-framework') . '" id="' . $this->field['id'] . '_style" data-id="' . $this->field['id'] . '" data-value="' . $style . '">';

                if (empty($this->value['subset'])) {
                    echo '<option value=""></option>';
                }

                $nonGStyles = array(
                    '200' => 'Lighter',
                    '400' => 'Normal',
                    '700' => 'Bold',
                    '900' => 'Bolder'
                );
                
                if (isset($gfonts[$this->value['font-family']])) {
                    foreach ($gfonts[$this->value['font-family']]['variants'] as $v) {
                        echo '<option value="' . $v['id'] . '" ' . selected($this->value['subset'], $v['id'], false) . '>' . $v['name'] . '</option>';
                    }
                } else {
                    foreach ($nonGStyles as $i => $style) {
                        if (!isset($this->value['subset']))
                            $this->value['subset'] = false;
                        echo '<option value="' . $i . '" ' . selected($this->value['subset'], $i, false) . '>' . $style . '</option>';
                    }
                }

                echo '</select></div>';
            }

            /* Font Script */
            if ($this->field['font-family'] === true && $this->field['subsets'] === true && $this->field['google'] === true){
                echo '<div class="select_wrapper typography-script tooltip" original-title="' . __('Font subsets', 'redux-framework') . '">';
                echo '<label>' . __('Font Subsets', 'redux-framework') . '</label>';
                echo '<select data-placeholder="' . __('Subsets', 'redux-framework') . '" class="redux-typography redux-typography-subsets' . $this->field['class'] . '" original-title="' . __('Font script', 'redux-framework') . '"  id="' . $this->field['id'] . '-subsets" name="' . $this->field['name'] . '[subsets]' . $this->field['name_suffix'] . '" data-value="' . $this->value['subsets'] . '" data-id="' . $this->field['id'] . '" >';

                if (empty($this->value['subsets'])) {
                    echo '<option value=""></option>';
                }

                if (isset($gfonts[$this->value['font-family']])) {
                    foreach ($gfonts[$this->value['font-family']]['subsets'] as $v) {
                        echo '<option value="' . $v['id'] . '" ' . selected($this->value['subset'], $v['id'], false) . '>' . $v['name'] . '</option>';
                    }
                }

                echo '</select></div>';
            }

            /* Font Align */
            if ($this->field['text-align'] === true){
                echo '<div class="select_wrapper typography-align tooltip" original-title="' . __('Text Align', 'redux-framework') . '">';
                echo '<label>' . __('Text Align', 'redux-framework') . '</label>';
                echo '<select data-placeholder="' . __('Text Align', 'redux-framework') . '" class="redux-typography redux-typography-align' . $this->field['class'] . '" original-title="' . __('Text Align', 'redux-framework') . '"  id="' . $this->field['id'] . '-align" name="' . $this->field['name'] . '[text-align]' . $this->field['name_suffix'] . '" data-value="' . $this->value['text-align'] . '" data-id="' . $this->field['id'] . '" >';
                echo '<option value=""></option>';

                $align = array(
                    'inherit',
                    'left',
                    'right',
                    'center',
                    'justify',
                    'initial'
                );

                foreach ($align as $v) {
                    echo '<option value="' . $v . '" ' . selected($this->value['text-align'], $v, false) . '>' . ucfirst($v) . '</option>';
                }

                echo '</select></div>';
            }

            /* Text Transform */
            if ($this->field['text-transform'] === true) {
                echo '<div class="select_wrapper typography-transform tooltip" original-title="' . __('Text Transform', 'redux-framework') . '">';
                echo '<label>' . __('Text Transform', 'redux-framework') . '</label>';
                echo '<select data-placeholder="' . __('Text Transform', 'redux-framework') . '" class="redux-typography redux-typography-transform' . $this->field['class'] . '" original-title="' . __('Text Transform', 'redux-framework') . '"  id="' . $this->field['id'] . '-transform" name="' . $this->field['name'] . '[text-transform]' . $this->field['name_suffix'] . '" data-value="' . $this->value['text-transform'] . '" data-id="' . $this->field['id'] . '" >';
                echo '<option value=""></option>';

                $values = array(
                    'none',
                    'capitalize',
                    'uppercase',
                    'lowercase',
                    'initial',
                    'inherit'
                );

                foreach ($values as $v) {
                    echo '<option value="' . $v . '" ' . selected($this->value['text-transform'], $v, false) . '>' . ucfirst($v) . '</option>';
                }

                echo '</select></div>';
            }

            /* Font Variant */
            if ($this->field['font-variant'] === true) {
                echo '<div class="select_wrapper typography-font-variant tooltip" original-title="' . __('Font Variant', 'redux-framework') . '">';
                echo '<label>' . __('Font Variant', 'redux-framework') . '</label>';
                echo '<select data-placeholder="' . __('Font Variant', 'redux-framework') . '" class="redux-typography redux-typography-font-variant' . $this->field['class'] . '" original-title="' . __('Font Variant', 'redux-framework') . '"  id="' . $this->field['id'] . '-font-variant" name="' . $this->field['name'] . '[font-variant]' . $this->field['name_suffix'] . '" data-value="' . $this->value['font-variant'] . '" data-id="' . $this->field['id'] . '" >';
                echo '<option value=""></option>';

                $values = array(
                    'inherit',
                    'normal',
                    'small-caps'
                );

                foreach ($values as $v) {
                    echo '<option value="' . $v . '" ' . selected($this->value['font-variant'], $v, false) . '>' . ucfirst($v) . '</option>';
                }

                echo '</select></div>';
            }

            /* Text Decoration */
            if ($this->field['text-decoration'] === true) {
                echo '<div class="select_wrapper typography-decoration tooltip" original-title="' . __('Text Decoration', 'redux-framework') . '">';
                echo '<label>' . __('Text Decoration', 'redux-framework') . '</label>';
                echo '<select data-placeholder="' . __('Text Decoration', 'redux-framework') . '" class="redux-typography redux-typography-decoration' . $this->field['class'] . '" original-title="' . __('Text Decoration', 'redux-framework') . '"  id="' . $this->field['id'] . '-decoration" name="' . $this->field['name'] . '[text-decoration]' . $this->field['name_suffix'] . '" data-value="' . $this->value['text-decoration'] . '" data-id="' . $this->field['id'] . '" >';
                echo '<option value=""></option>';

                $values = array(
                    'none',
                    'inherit',
                    'underline',
                    'overline',
                    'line-through',
                    'blink'
                );

                foreach ($values as $v) {
                    echo '<option value="' . $v . '" ' . selected($this->value['text-decoration'], $v, false) . '>' . ucfirst($v) . '</option>';
                }

                echo '</select></div>';
            }

            /* Font Size */
            if ($this->field['font-size'] === true){
                echo '<div class="input_wrapper font-size redux-container-typography">';
                echo '<label>' . __('Font Size', 'redux-framework') . '</label>';
                echo '<div class="input-append"><input type="text" class="span2 redux-typography redux-typography-size mini typography-input' . $this->field['class'] . '" title="' . __('Font Size', 'redux-framework') . '" placeholder="' . __('Size', 'redux-framework') . '" id="' . $this->field['id'] . '-size" name="' . $this->field['name'] . '[font-size]' . $this->field['name_suffix'] . '" value="' . str_replace($unit, '', $this->value['font-size']) . '" data-value="' . str_replace($unit, '', $this->value['font-size']) . '"><span class="add-on">' . $unit . '</span></div>';
                echo '<input type="hidden" class="typography-font-size" name="' . $this->field['name'] . '[font-size]' . $this->field['name_suffix'] .'" value="' . $this->value['font-size'] . '" data-id="' . $this->field['id'] . '"  />';
                echo '</div>';
            }

            /* Line Height */
            if ($this->field['line-height'] === true){
                echo '<div class="input_wrapper line-height redux-container-typography">';
                echo '<label>' . __('Line Height', 'redux-framework') . '</label>';
                echo '<div class="input-append"><input type="text" class="span2 redux-typography redux-typography-height mini typography-input' . $this->field['class'] . '" title="' . __('Line Height', 'redux-framework') . '" placeholder="' . __('Height', 'redux-framework') . '" id="' . $this->field['id'] . '-height" value="' . str_replace($unit, '', $this->value['line-height']) . '" data-value="' . str_replace($unit, '', $this->value['line-height']) . '"><span class="add-on">' . $unit . '</span></div>';
                echo '<input type="hidden" class="typography-line-height" name="' . $this->field['name'] . '[line-height]' . $this->field['name_suffix'] . '" value="' . $this->value['line-height'] . '" data-id="' . $this->field['id'] . '"  />';
                echo '</div>';
            }

            /* Word Spacing */
            if ($this->field['word-spacing'] === true){
                echo '<div class="input_wrapper word-spacing redux-container-typography">';
                echo '<label>' . __('Word Spacing', 'redux-framework') . '</label>';
                echo '<div class="input-append"><input type="text" class="span2 redux-typography redux-typography-word mini typography-input' . $this->field['class'] . '" title="' . __('Word Spacing', 'redux-framework') . '" placeholder="' . __('Word Spacing', 'redux-framework') . '" id="' . $this->field['id'] . '-word" value="' . str_replace($unit, '', $this->value['word-spacing']) . '" data-value="' . str_replace($unit, '', $this->value['word-spacing']) . '"><span class="add-on">' . $unit . '</span></div>';
                echo '<input type="hidden" class="typography-word-spacing" name="' . $this->field['name'] . '[word-spacing]' . $this->field['name_suffix'] . '" value="' . $this->value['word-spacing'] . '" data-id="' . $this->field['id'] . '"  />';
                echo '</div>';
            }

            /* Letter Spacing */
            if ($this->field['letter-spacing'] === true){
                echo '<div class="input_wrapper letter-spacing redux-container-typography">';
                echo '<label>' . __('Letter Spacing', 'redux-framework') . '</label>';
                echo '<div class="input-append"><input type="text" class="span2 redux-typography redux-typography-letter mini typography-input' . $this->field['class'] . '" title="' . __('Letter Spacing', 'redux-framework') . '" placeholder="' . __('Letter Spacing', 'redux-framework') . '" id="' . $this->field['id'] . '-letter" value="' . str_replace($unit, '', $this->value['letter-spacing']) . '" data-value="' . str_replace($unit, '', $this->value['letter-spacing']) . '"><span class="add-on">' . $unit . '</span></div>';
                echo '<input type="hidden" class="typography-letter-spacing" name="' . $this->field['name'] . '[letter-spacing]' . $this->field['name_suffix'] . '" value="' . $this->value['letter-spacing'] . '" data-id="' . $this->field['id'] . '"  />';
                echo '</div>';
            }

            echo '<div class="clearfix"></div>';

            /* Font Color */
            if ($this->field['color'] === true){
                $default = "";

                if (empty($this->field['default']['color']) && !empty($this->field['color'])) {
                    $default = $this->value['color'];
                } else if (!empty($this->field['default']['color'])) {
                    $default = $this->field['default']['color'];
                }

                echo '<div class="picker-wrapper">';
                echo '<label>' . __('Font Color', 'redux-framework') . '</label>';
                echo '<div id="' . $this->field['id'] . '_color_picker" class="colorSelector typography-color"><div style="background-color: ' . $this->value['color'] . '"></div></div>';
                echo '<input data-default-color="' . $default . '" class="redux-color redux-typography-color' . $this->field['class'] . '" original-title="' . __('Font color', 'redux-framework') . '" id="' . $this->field['id'] . '-color" name="' . $this->field['name'] . '[color]' . $this->field['name_suffix'] . '" type="text" value="' . $this->value['color'] . '" data-id="' . $this->field['id'] . '" />';
                echo '</div>';
            }
            
            echo '<div class="clearfix"></div>';
            
            /* Font Preview */
            if (!isset($this->field['preview']) || $this->field['preview'] !== false){
                if (isset($this->field['preview']['text'])) {
                    $g_text = $this->field['preview']['text'];
                } else {
                    $g_text = '1 2 3 4 5 6 7 8 9 0 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z a b c d e f g h i j k l m n o p q r s t u v w x y z';
                }

                $style = '';
                if (isset($this->field['preview']['always_display'])) {
                    if (true === filter_var( $this->field['preview']['always_display'], FILTER_VALIDATE_BOOLEAN )) {
                        
                        $this->parent->typography_preview[$fontFamily[0]] = array(
                            'font-style'    => array($this->value['font-weight'] . $this->value['font-style']),
                            'subset'        => array($this->value['subset'])
                        );

                        $protocol = ( ! empty( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443 ) ? "https:" : "http:";
                        
                        wp_deregister_style('redux-typography-preview');
                        wp_dequeue_style('redux-typography-preview');
                        
                        wp_register_style( 'redux-typography-preview', $protocol . $this->makeGoogleWebfontLink( $this->parent->typography_preview ), '', time() );
                        wp_enqueue_style( 'redux-typography-preview' );
                        
                        $style = 'display: block; font-family: ' . $this->value['font-family'] . '; font-weight: ' . $this->value['font-weight'] . ';' ;
                    }
                }
                
                if (isset($this->field['preview']['font-size'])) {
                    $style .= 'font-size: ' . $this->field['preview']['font-size'] . ';';
                    $inUse = '1';
                } else {
                    //$g_size = '';
                    $inUse = '0';
                }

                echo '<p data-preview-size="' . $inUse . '" class="clear ' . $this->field['id'] . '_previewer typography-preview" ' . 'style="' . $style . '">' . $g_text . '</p>';
                echo '</div>'; // end typography container
            }
        }  //function

        /**
         * Enqueue Function.
         *
         * If this field requires any scripts, or css define this function and register/enqueue the scripts/css
         *
         * @since ReduxFramework 1.0.0
         */
        function enqueue() {

            wp_enqueue_script(
                'redux-field-typography-js', 
                ReduxFramework::$_url . 'inc/fields/typography/field_typography' . Redux_Functions::isMin() . '.js',
                array( 'jquery', 'wp-color-picker', 'select2-js', 'redux-js' ),
                time(),
                true
            );

            wp_localize_script( 
                'redux-field-typography-js', 
                'redux_ajax_script', 
                array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) 
            );        

            wp_enqueue_style(
                'redux-field-typography-css',
                ReduxFramework::$_url . 'inc/fields/typography/field_typography.css',
                time(),
                true
            );
        }  //function

        /**
         * makeGoogleWebfontLink Function.
         *
         * Creates the google fonts link.
         *
         * @since ReduxFramework 3.0.0
         */
        function makeGoogleWebfontLink($fonts) {
            $link       = "";
            $subsets    = array();

            foreach ($fonts as $family => $font) {
                if (!empty($link)) {
                    $link.= "%7C"; // Append a new font to the string
                }
                $link.= $family;

                if (!empty($font['font-style'])) {
                    $link.= ':';
                    if (!empty($font['all-styles'])) {
                        $link.= implode(',', $font['all-styles']);
                    } else if (!empty($font['font-style'])) {
                        $link.= implode(',', $font['font-style']);
                    }
                }

                if (!empty($font['subset'])) {
                    foreach ($font['subset'] as $subset) {
                        if (!in_array($subset, $subsets)) {
                            array_push($subsets, $subset);
                        }
                    }
                }
            }

            if (!empty($subsets)) {
                $link.= "&amp;subset=" . implode(',', $subsets);
            }

            return '//fonts.googleapis.com/css?family=' . str_replace( '|','%7C', $link );
        }

        /**
         * makeGoogleWebfontString Function.
         *
         * Creates the google fonts link.
         *
         * @since ReduxFramework 3.1.8
         */
        function makeGoogleWebfontString($fonts) {
            $link       = "";
            $subsets    = array();

            foreach ($fonts as $family => $font) {
                if (!empty($link)) {
                    $link.= "', '"; // Append a new font to the string
                }
                $link.= $family;

                if (!empty($font['font-style'])) {
                    $link.= ':';
                    if (!empty($font['all-styles'])) {
                        $link.= implode(',', $font['all-styles']);
                    } else if (!empty($font['font-style'])) {
                        $link.= implode(',', $font['font-style']);
                    }
                }

                if (!empty($font['subset'])) {
                    foreach ($font['subset'] as $subset) {
                        if (!in_array($subset, $subsets)) {
                            array_push($subsets, $subset);
                        }
                    }
                }
            }

            if (!empty($subsets)) {
                $link.= "&amp;subset=" . implode(',', $subsets);
            }

            return "'" . $link . "'";
        }

        function output() {
            $font = $this->value;

            // Check for font-backup.  If it's set, stick it on a variabhle for
            // later use.
            if (!empty($font['font-family']) && !empty($font['font-backup'])) {
                $font['font-family'] = str_replace(', ' . $font['font-backup'], '', $font['font-family']);
                $fontBackup = ',' . $font['font-backup'];
            }

            $style = '';
            if (!empty($font)) {
                foreach ($font as $key => $value) {
                    if ($key == 'font-options') {
                        continue;
                    }
                    // Check for font-family key
                    if ('font-family' == $key) {

                        // Ensure fontBackup isn't empty (we already option
                        // checked this earlier.  No need to do it again.
                        if (!empty($fontBackup)) {

                            // Apply the backup font to the font-family element
                            // via the saved variable.  We do this here so it
                            // doesn't get appended to the Google stuff below.
                            $value.= $fontBackup;
                        }
                    }

                    if (empty($value) && in_array($key, array(
                                'font-weight',
                                'font-style'
                            ))) {
                        $value = "normal";
                    }

                    if ($key == "google" || $key == "subsets" || $key == "font-backup" || empty($value)) {
                        continue;
                    }
                    $style.= $key . ':' . $value . ';';
                }
                if ( isset( $this->parent->args['async_typography'] ) && $this->parent->args['async_typography'] ) {
                    $style .= 'visibility: hidden;';
                }
            }

            if (!empty($style)) {
                if (!empty($this->field['output']) && is_array($this->field['output'])) {
                    $keys = implode(",", $this->field['output']);
                    $this->parent->outputCSS.= $keys . "{" . $style . '}';
                }

                if (!empty($this->field['compiler']) && is_array($this->field['compiler'])) {
                    $keys = implode(",", $this->field['compiler']);
                    $this->parent->compilerCSS.= $keys . "{" . $style . '}';
                }
            }
            // Google only stuff!
            if (!empty($font['font-family']) && !empty($this->field['google']) && filter_var($this->field['google'], FILTER_VALIDATE_BOOLEAN)) {

                // Added standard font matching check to avoid output to Google fonts call - kp
                // If no custom font array was supplied, the load it with default
                // standard fonts.
                if (empty($this->field['fonts'])) {
                    $this->field['fonts'] = $this->std_fonts;
                }

                // Ensure the fonts array is NOT empty
                if (!empty($this->field['fonts'])) {

                    //Make the font keys in the array lowercase, for case-insensitive matching
                    $lcFonts = array_change_key_case($this->field['fonts']);

                    // Rebuild font array with all keys stripped of spaces
                    $arr = array();
                    foreach ($lcFonts as $key => $value) {
                        $key = str_replace(', ', ',', $key);
                        $arr[$key] = $value;
                    }
                    $lcFonts = $arr;
                    unset($arr);

                    // lowercase chosen font for matching purposes
                    $lcFont = strtolower($font['font-family']);

                    // Remove spaces after commas in chosen font for mathcing purposes.
                    $lcFont = str_replace(', ', ',', $lcFont);

                    // If the lower cased passed font-family is NOT found in the standard font array
                    // Then it's a Google font, so process it for output.
                    if (!array_key_exists($lcFont, $lcFonts)) {
                        $family = $font['font-family'];

                        // Strip out spaces in font names and replace with with plus signs
                        // TODO?: This method doesn't respect spaces after commas, hence the reason
                        // for the std_font array keys having no spaces after commas.  This could be
                        // fixed with RegEx in the future.
                        $font['font-family'] = str_replace(' ', '+', $font['font-family']);

                        // Push data to parent typography variable.
                        if (empty($this->parent->typography[$font['font-family']])) {
                            $this->parent->typography[$font['font-family']] = array();
                        }

                        if (isset($this->field['all_styles'])) {
                            if (!isset($font['font-options']) || empty($font['font-options'])) {
                                $this->getGoogleArray();

                                if (isset($this->parent->googleArray) && !empty($this->parent->googleArray) && isset($this->parent->googleArray[$family])) {
                                    $font['font-options'] = $this->parent->googleArray[$family];
                                }
                            } else {
                                $font['font-options'] = json_decode($font['font-options'], true);
                            }
                        }

                        if (isset($font['font-options']) && !empty($font['font-options']) && isset($this->field['all_styles']) && filter_var($this->field['all_styles'], FILTER_VALIDATE_BOOLEAN)) {
                            if (isset($font['font-options']) && !empty($font['font-options']['variants'])) {
                                if (!isset($this->parent->typography[$font['font-family']]['all-styles']) || empty($this->parent->typography[$font['font-family']]['all-styles'])) {
                                    $this->parent->typography[$font['font-family']]['all-styles'] = array();
                                    foreach ($font['font-options']['variants'] as $variant) {
                                        $this->parent->typography[$font['font-family']]['all-styles'][] = $variant['id'];
                                    }
                                }
                            }
                        }

                        if (!empty($font['font-weight'])) {
                            if (empty($this->parent->typography[$font['font-family']]['font-weight']) || !in_array($font['font-weight'], $this->parent->typography[$font['font-family']]['font-weight'])) {
                                $style = $font['font-weight'];
                            }

                            if (!empty($font['font-style'])) {
                                $style.= $font['font-style'];
                            }

                            if (empty($this->parent->typography[$font['font-family']]['font-style']) || !in_array($style, $this->parent->typography[$font['font-family']]['font-style'])) {
                                $this->parent->typography[$font['font-family']]['font-style'][] = $style;
                            }
                        }

                        if (!empty($font['subsets'])) {
                            if (empty($this->parent->typography[$font['font-family']]['subset']) || !in_array($font['subsets'], $this->parent->typography[$font['font-family']]['subset'])) {
                                $this->parent->typography[$font['font-family']]['subset'][] = $font['subsets'];
                            }
                        }
                    } // !array_key_exists
                } //!empty fonts array
            } // Typography not set
        }

        private function localizeStdFonts() {
            if (false == $this->user_fonts) {
                if (isset($this->parent->fonts['std']) && !empty($this->parent->fonts['std'])) {
                    return;
                }            

                $this->parent->font_groups['std'] = array(
                    'text'      => __('Standard Fonts', 'redux-framework'),
                    'children'  => array(),
                );

                foreach($this->field['fonts'] as $font => $extra){
                    $this->parent->font_groups['std']['children'][] = array(
                        'id'            => $font,
                        'text'          => $font,
                        'data-google'   => 'false',
                    );
                }
            }
            
            if ($this->field['custom_fonts'] !== false) {
                $this->field['custom_fonts'] = apply_filters("redux/{$this->parent->args['opt_name']}/field/typography/custom_fonts", array());
                
                 if (!empty($this->field['custom_fonts'])) {
                    foreach ($this->field['custom_fonts'] as $group => $fonts) {
                        $this->parent->font_groups['customfonts'] = array(
                            'text'      => $group,
                            'children'  => array(),                            
                        );

                        foreach ($fonts as $family => $v) {
                            $this->parent->font_groups['customfonts']['children'][] = array(
                                'id'            => $family,
                                'text'          => $family,
                                'data-google'   => 'false',
                            );
                        }
                    }
                }    
            }            
        }
        
        /**
         *
         *   Construct the google array from the stored JSON/HTML
         *
         */
        function getGoogleArray() {
            global $wp_filesystem;

            // Is already present?
            if (isset($this->parent->fonts['google']) && !empty($this->parent->fonts['google'])) {
                return;
            }

            // Weekly update
            if (isset($this->field['update_weekly']) && $this->field['update_weekly'] === true && $this->field['google'] === true && !empty($this->parent->args['google_api_key'])) {
                if (file_exists($this->google_json)) {

                    // Keep the fonts updated weekly
                    $weekback = strtotime(date('jS F Y', time() + (60 * 60 * 24 * -7)));
                    $last_updated = filemtime($this->google_json);
                    if ($last_updated < $weekback) {
                        unlink($this->google_json);
                    }
                }
            }

            // Initialize the Wordpress filesystem, no more using file_put_contents function
            Redux_Functions::initWpFilesystem();

            if (!file_exists($this->google_json)) {
                $result = wp_remote_get(apply_filters('redux-google-fonts-api-url', 'https://www.googleapis.com/webfonts/v1/webfonts?key=') . $this->parent->args['google_api_key'], array('sslverify' => false));

                if (!is_wp_error($result) && $result['response']['code'] == 200) {
                    $result = json_decode($result['body']);
                    foreach ($result->items as $font) {
                        $this->parent->googleArray[$font->family] = array(
                            'variants' => $this->getVariants($font->variants),
                            'subsets' => $this->getSubsets($font->subsets)
                        );
                    }

                    if (!empty($this->parent->googleArray)) {
                        $wp_filesystem->put_contents($this->google_json, json_encode($this->parent->googleArray), FS_CHMOD_FILE
                                // predefined mode settings for WP files
                        );
                    }
                } //if
            }

            if (!isset($this->parent->fonts['google']) || empty($this->parent->fonts['google'])) {
                $fonts = json_decode($wp_filesystem->get_contents($this->google_json), true);

                if (isset($fonts) && !empty($fonts) && is_array($fonts) && $fonts != false) {
                    $this->parent->fonts['google'] = $fonts;
                    $this->parent->googleArray = $fonts;
                    
                    // optgroup
                    $this->parent->font_groups['google'] = array(
                        'text'      => __('Google Webfonts', 'redux-framework'),
                        'children'  => array(),
                    );

                    // options
                    foreach ($this->parent->fonts['google'] as $font => $extra) {
                        $this->parent->font_groups['google']['children'][] = array(
                            'id'            => $font,
                            'text'          => $font,
                            'data-google'   => 'true'
                        );
                    }
                }
            }
        }

        /**
         * getSubsets Function.
         *
         * Clean up the Google Webfonts subsets to be human readable
         *
         * @since ReduxFramework 0.2.0
         */
        private function getSubsets($var) {
            $result = array();

            foreach ($var as $v) {
                if (strpos($v, "-ext")) {
                    $name = ucfirst(str_replace("-ext", " Extended", $v));
                } else {
                    $name = ucfirst($v);
                }

                array_push($result, array(
                    'id'    => $v,
                    'name'  => $name
                ));
            }
            return array_filter($result);
        }  //function

        /**
         * getVariants Function.
         *
         * Clean up the Google Webfonts variants to be human readable
         *
         * @since ReduxFramework 0.2.0
         */
        private function getVariants($var) {
            $result = array();
            $italic = array();

            foreach ($var as $v) {
                $name = "";
                if ($v[0] == 1) {
                    $name = 'Ultra-Light 100';
                } else if ($v[0] == 2) {
                    $name = 'Light 200';
                } else if ($v[0] == 3) {
                    $name = 'Book 300';
                } else if ($v[0] == 4 || $v[0] == "r" || $v[0] == "i") {
                    $name = 'Normal 400';
                } else if ($v[0] == 5) {
                    $name = 'Medium 500';
                } else if ($v[0] == 6) {
                    $name = 'Semi-Bold 600';
                } else if ($v[0] == 7) {
                    $name = 'Bold 700';
                } else if ($v[0] == 8) {
                    $name = 'Extra-Bold 800';
                } else if ($v[0] == 9) {
                    $name = 'Ultra-Bold 900';
                }

                if ($v == "regular") {
                    $v = "400";
                }

                if (strpos($v, "italic") || $v == "italic") {
                    $name.= " Italic";
                    $name = trim($name);
                    if ($v == "italic") {
                        $v = "400italic";
                    }
                    $italic[] = array(
                        'id'    => $v,
                        'name'  => $name
                    );
                } else {
                    $result[] = array(
                        'id'    => $v,
                        'name'  => $name
                    );
                }
            }

            foreach ($italic as $item) {
                $result[] = $item;
            }

            return array_filter($result);
        }   //function
    }       //class
}           //class exists